3
ALIGNMENT PROCEDURE
Base Unit
Transmitter Section
Connections
Preset
a) Connect the base RF unit to the base main unit.
b) Connect the AC adapter to the base unit while pressing the “
∗
” and “ # “ keys and keep pressing it continuously
for approximate 1 second.
c) Release the keys when entering TEST mode with beep.
d) Press “1” key to enter the TEST mode 1.
Alignment Procedure
Alignment Point Location on Base Main PCB and Base RF PCB
S1
T/P Switch
P
T
RF Test Point
step
1
2
3
Adjustment
RT301
(TX Power)
CT1
(TX Frequency)
RT2
(TX Modulation)
Remarks
Connect the Power Meter to the RF test point on the Base MAIN PCB.
Adjust RT301 for a -5.0dBm reading on the Power Meter.
Connect the Frequency Counter to the RF test point on the Base MAIN
PCB. Adjust CT1 to make sure that the frequency is 926.897468 MHz.
Press the “2” key to enter the TEST Mode 2. Connect the AF Generator to
the TEL Line Jack on the Base Main PCB. Make sure that the output is 1
kHz 77.5 mV from the AF Generator.
Connect the Deviation Meter to the RF test point on the Base MAIN PCB.
Adjust RT2 to indicate ±8 kHz Dev.
Base RF PCB
J4
DC IN 9V Jack
J1
TEL LINE Jack
Base Main PCB
Power
Meter
RF
Test Point
BASE Unit
J4
DC IN
9V Jack
1kHz 77.5mV
AF GEN.
AC 120V
60Hz
Frequency
Counter
Deviation
Mater
RF
Test Point
J1
TEL Line
Jack
AC
Adapter
Summary of Contents for FT-8259
Page 1: ...CORDLESS TELEPHONE PUBLISHED IN JAPAN Sep 1999 SERVICE MANUAL FILE NO 2B0 9906 FT 8259 ...
Page 8: ...7 BLOCK DIAGRAMS Base Unit ...
Page 9: ...8 Handset ...
Page 10: ...9 10 SCHEMATIC DIAGRAMS Base Unit Main ...
Page 11: ...11 Base Unit Key ...
Page 12: ...12 13 Handset ...
Page 31: ...32 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Page 32: ...33 Base Unit Key PCB ...
Page 33: ...34 Handset Main PCB ...
Page 34: ...35 36 WIRING DIAGRAMS Base Unit ...
Page 35: ...37 Handset ...
Page 38: ...40 Handset 7 8 4 1 16 17 17 5 10 15 11 12 2 9 6 13 14 3 17 MAIN PCB ASSY RF MODULE HANDSET ...
Page 60: ......